Array -- class of all arrays -- [...]

Array -- class of all arrays -- [...]

An array is like a list, except that brackets are used instead of braces when entering or displaying an array, and arrays can't be used as vectors. Their main use is notational: for example, they appear in the construction of polynomial rings.

i1 : v = [a,b,c]



o1 = [a, b, c]



o1 : Array

i2 : v#2



o2 = c



o2 : Symbol

i3 : ZZ[a,b,c]



o3 = ZZ [a, b, c]



o3 : PolynomialRing

See also:

lists

The type Array is a member of the class Type. Each object of class Array is called an array. Each array is also a member of class VisibleList.

Methods for using an array :

ChainComplex [...] -- chain complex degree shift

ChainComplex ^ [...]

ChainComplex _ [...]

ChainComplexMap ^ [...]

ChainComplexMap _ [...]

Expression [...]

GradedModule [...]

GradedModuleMap ^ [...]

GradedModuleMap _ [...]

Holder [...]

Matrix ^ [...] -- select some rows of blocks

Matrix _ [...] -- select some columns of blocks

Module [...] -- make a chain complex from a module

Module ^ [...] -- projection onto some factors of a direct sum module

Module _ [...] -- get inclusion map into direct sum

Ring [...] -- the standard way to make a polynomial ring

expression [...]

group [...]

monoid [...] -- make a polynomial ring or monoid ring

net [...]

precedence [...]

toExternalString [...]

toString [...]